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Volume Frame of Reference UID
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(0020,9312)
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1
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Uniquely identifies this Volume Frame of Reference.
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Ultrasound Acquisition Geometry
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(0020,9307)
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1
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Characteristic of the ultrasound acquisition geometry.
Defined Terms:
APEX
there exists an apex of the scan lines from which the volume data was acquired.
PATIENT
the ultrasound acquisition geometry is patient relative
When the value is PATIENT, the Plane Position (Patient) and Plane Orientation (Patient) functional group macros will be present, and will contain attributes with identical values to the corresponding attributes in the Plane Position (Volume) and Plane Orientation (Volume) functional group macros.
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Apex Position
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(0020,9308)
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1C
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Position of the apex (or phase center) of the acquisition geometry, encoded as xA, yA, and zA in mm units in the Volume Frame of Reference. The apex (xA, yA, zA) may be located in the volume or exterior to it.
Required if value of Ultrasound Acquisition Geometry (0020,9307) is APEX.
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Volume to Transducer Relationship
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(0020,930B)
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1C
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Relationship between the transducer and the acquired volume.
Enumerated Values:
FIXED
The transducer position and orientation relative to the volume is constant and specified by Volume to Transducer Mapping Matrix (0020,9309).
POSITION_VAR
The transducer position relative to the volume varies during acquisition and the position specified by Volume to Transducer Mapping Matrix (0020,9309) is a nominal value. The transducer orientation relative to the volume is constant and specified by Volume to Transducer Mapping Matrix (0020,9309).
ORIENTATION_VAR
The transducer orientation relative to the volume varies during acquisition and the orientation specified by Volume to Transducer Mapping Matrix (0020,9309) is a nominal value. The transducer position relative to the volume is constant and specified by Volume to Transducer Mapping Matrix (0020,9309).
VARIABLE
The transducer position and orientation relative to the volume varies during acquisition and the position and orientation specified by Volume to Transducer Mapping Matrix (0020,9309) are nominal.
Required if the transducer position and/or orientation relative to the volume is not constant. May be present otherwise.
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Volume to Transducer Mapping Matrix
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(0020,9309)
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1
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A 4x4 rigid transformation matrix that maps the Volume Frame of Reference homogeneous coordinate system (XV, YV, ZV) to the Transducer Frame of Reference homogeneous coordinate system (XX,YX, ZX). Matrix elements shall be listed in row-major order. See for details.
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Patient Frame of Reference Source
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(0020,930C)
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1C
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Indicates how the supplied Image Position (Patient) (0020,0032) and Image Orientation (Patient) (0020,0037) values are obtained.
Enumerated Values:
TABLE
A positioning device, such as a gantry, was used to generate these values.
ESTIMATED
Estimated patient position / orientation (e.g., estimated by the user), or if reliable information is not available.
REGISTRATION
Acquisition has been spatially registered to a prior image set.
Required if either Image Position (Patient) (0020,0032) or Image Orientation (Patient) (0020,0037) is present.
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Table Frame of Reference UID
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(0020,9313)
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1C
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Uniquely identifies this Table Frame of Reference.
Required if Patient Frame of Reference Source (0020,930C) is TABLE.
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Volume to Table Mapping Matrix
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(0020,930A)
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1C
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A 4x4 rigid transformation matrix that maps the Volume Frame of Reference homogeneous coordinate system (XV,YV, ZV) to the Table Frame of Reference homogeneous coordinate system (XT,YT, ZT). Matrix elements shall be listed in row-major order. See for details.
Required if Patient Frame of Reference Source (0020,930C) is TABLE.
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